Hydrocracking catalyst

Abstract

Disclosed is a hydrocracking process utilizing a catalyst comprising a Ziegler alumina-zeolite support, a rare earth exchange metal component and a platinum group metal component.

We claim as our invention: 
     
       1. A process for the conversion of heavy hydrocarbon oil boiling above about 650° F. into lower boiling hydrocarbons, which comprises hydrocracking the heavy oil in admixture with hydrogen and in contact with a catalyst comprising a rare earth exchange metal component and a platinum group metal component supported on a mixture of Ziegler alumina and a zeolite. 
     
     
       2. The process of claim 1 wherein the Ziegler alumina-zeolite weight ratio is from about 1:5 to about 20:1. 
     
     
       3. The process of claim 1 wherein the zeolite is Y faujasite. 
     
     
       4. The process of claim 1 wherein the rare earth metal component is from about 1 weight percent to about 10 weight percent based on the weight of the finished catalyst. 
     
     
       5. The process of claim 1 wherein said platinum group metal is platinum. 
     
     
       6. The process of claim 1 wherein said platinum group metal is palladium.